CN111386689A

CN111386689A - Protocol data unit session state indication method, terminal device and storage medium

Info

Publication number: CN111386689A
Application number: CN201880074600.9A
Authority: CN
Inventors: 石聪; 刘建华; 杨宁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-07-07
Also published as: EP4106299A1; MX2021005039A; CA3118227A1; US20220132621A1; AU2018447611A1; SG11202104406QA; JP2022511578A; EP3873064A4; US11265959B2; EP4106299B1; CN111935853B; CN111935853A; US11737161B2; KR20210086650A; CA3118227C; US20210251036A1; AU2018447611B2; WO2020087421A1; EP3873064B1; EP3873064A1

Abstract

The invention discloses a method for indicating the session state of a protocol data unit, which comprises the following steps: the terminal equipment indicates the activation and/or deactivation of the protocol data unit session based on the configuration signaling sent by the network equipment. The invention also discloses a terminal device and a storage medium.

Description

Protocol data unit session state indication method, terminal device and storage medium

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method for indicating a session status of a protocol data unit, a terminal device, and a storage medium.

Background

In a Non-Access Stratum (NAS) layer of a terminal device (UE), the UE needs to know a state of a Protocol Data Unit (PDU) session (session), such as an active state or a deactivated state, so that the UE determines whether the PDU session needs to be activated. Therefore, how the NAS layer of the UE determines the activation state or the deactivation state of the PDU session is an urgent problem to be solved.

Disclosure of Invention

In order to solve the above technical problem, embodiments of the present invention provide a PDU session status indication method, a terminal device, and a storage medium, so that an NAS layer of a UE can determine an activation status or a deactivation status of a PDU session.

In a first aspect, an embodiment of the present invention provides a PDU session status indication method, including: and the terminal equipment indicates PDU session activation and/or deactivation based on the configuration signaling sent by the network equipment.

In a second aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes: and the processing unit is configured to indicate the activation and/or deactivation of the session PDU based on the configuration signaling sent by the network equipment.

In a third aspect, an embodiment of the present invention provides a terminal device, including: a processor and a memory for storing a computer program operable on the processor, wherein the processor is configured to perform the steps of the method performed by the terminal device when executing the computer program.

In a fourth aspect, an embodiment of the present invention provides a storage medium, which stores an executable program, and when the executable program is executed by a processor, the storage medium implements the method executed by the terminal device.

According to the PDU session state indication method provided by the embodiment of the invention, the UE can indicate that the PDU session state is activated and/or deactivated based on the configuration signaling sent by the network equipment, so that the NAS layer of the UE can determine the PDU session state.

Drawings

FIG. 1 is a schematic view of a QoS model of a related art 5G system;

FIG. 2 is a block diagram of a communication system according to an embodiment of the present invention;

fig. 3 is a schematic view of an optional processing flow of a PDU session status indication method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a hardware composition structure of a terminal device according to an embodiment of the present invention.

Detailed Description

So that the manner in which the features and technical contents of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the present invention will be rendered by reference to the appended drawings, which are included for purposes of illustration and not limitation.

Before describing the embodiments of the present invention in detail, a Quality of Service (QoS) model of a 5G system will be briefly described.

As shown in fig. 1, one or more PDU sessions are established for each UE; at least one Data Radio Bearer (DRB) is established for each PDU session. For each UE, the NG-RAN establishes at least one DRB for each PUD; and when the DRB is established, simultaneously establishing PDU session associated with the DRB. Moreover, the NG-RAN can also establish other DRBs, and the DRBs have an association relation with the QoS flow of the PDU session; and the NG-RAN establishes the association relation between the data packets belonging to different PDU sessions and different DRBs.

For each PDU session, when a DRB is not configured for the PDU session through RRC signaling and a mapping rule between the PDU session and the DRB is not configured, the PDU session may be configured with a default DRB, and at this time, the UE maps the data packet to the default DRB corresponding to the PDU session.

For each PDU session, how to map the multi-QoS flows to the DRBs is performed by the NG-RAN. The NG-RAN may map one GBR flow and one non-GBR flow, or multiple GBR flows, to the same DRB.

The invention provides a PDU session state indication method, which can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 2. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 2 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 2 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

As shown in fig. 3, the optional processing flow of the PDU session status indication method provided in the embodiment of the present invention includes the following steps:

step S201, the terminal device indicates the protocol PDU session activation and/or deactivation based on the configuration signaling sent by the network device.

In the embodiment of the invention, the UE receives a configuration signaling sent by the network equipment, wherein the configuration signaling is used for indicating the terminal equipment to execute activation processing and/or deactivation processing on the PDU session. The PDU session has a corresponding relationship with the DRB, one PDU session may be associated with one DRB, and one PDU session may also be associated with a plurality of DRBs.

In some embodiments, when the configuration signaling indicates to deactivate the first PDU session or the first group of PDU sessions, the UE releases the DRB associated with the first PDU session or the first group of PDU sessions based on the configuration signaling. After the UE deactivates the first PDU session or the first group of PDU sessions, a Radio Resource Control (RRC) layer of the UE indicates that the state of the first PDU session or the first group of PDU sessions is deactivated by a higher layer.

For example, when the configuration signaling indicates to deactivate the first set of PDU sessions, the UE releases all DRBs associated with the first set of PDU sessions.

In still other embodiments, when the configuration signaling indicates a first DRB identity ID or a first set of DRB IDs to be released, the UE releases the DRBs corresponding to the first DRB ID or the first set of DRB IDs based on the configuration signaling. And when the UE releases the DRB so that at least one PDU session has no associated DRB, the RRC layer of the UE indicates that the state of the at least one PDU session is deactivated.

For example, the fourth PDU session is associated with three DRBs, the first set of DRB IDs includes three DRB IDs, and the three DRBs corresponding to the three DRB IDs are associated with the fourth PDU session; when the configuration signaling indicates to release the first set of DRB IDs, all three DRBs corresponding to the three DRB IDs included in the first set of DRB IDs are released, and then the fourth PDU session has no DRB associated therewith; at this time, the RRC layer of the UE indicates that the state of the higher layer fourth PDU session is deactivated.

In still other embodiments, the configuration signaling indicates the released first DRB ID or the first set of DRB IDs, and the configuration signaling further indicates that the second PDU session associated with the second DRB corresponding to the second DRB ID is deactivated, and the RRC layer of the terminal device indicates that the state of the second PDU session is deactivated by a higher layer.

For example, the configuration signaling indicates a first DRB ID released, the first DRB ID is associated with a second PDU session, and DRBs associated with the second PDU session are a first DRB, a second DRB, and a third DRB, respectively; the first DRB corresponds to the first DRB ID, the second DRB corresponds to the second DRB ID, and the third DRB corresponds to the third DRB ID. If the configuration signaling only indicates the released first DRB ID, the second PDU session associated with the first DRB corresponding to the first DRB ID also has a corresponding relation with the second DRB and the third DRB; therefore, if the configuration signaling does not indicate that the second PDU session associated with the second DRB corresponding to the second DRB ID is deactivated, the configuration signaling does not indicate that the second PDU session associated with the second DRB corresponding to the third DRB ID is deactivated; the UE does not deactivate the second PDU session. If the configuration signaling indicates that the second PDU session associated with the second DRB corresponding to the second DRB ID is deactivated, or indicates that the second PDU session associated with the second DRB corresponding to the third DRB ID is deactivated; the UE deactivates the second PDU session; and simultaneously, the RRC layer of the UE indicates the second PDU session to be deactivated by the higher layer.

Here, the second DRB ID may be the same as the first DRB ID, or may be different from the first DRB ID; the first DRB ID may belong to the first group DRB ID, or the first DRB ID may not belong to the first group DRB ID.

In still other embodiments, the configuration signaling indicates a second DRB ID or a second set of DRB IDs added by the UE, and the UE adds DRBs corresponding to the second DRB ID or the second set of DRB IDs; and when the DRB added by the UE is the first DRB of the third PDU session, the RRC layer of the UE indicates that the state of the third PDU session is activated.

Optionally, the configuration instruction in the embodiment of the present invention is an RRC Reconfiguration (Reconfiguration) message, and the RRC Reconfiguration message includes Radio Bearer configuration (Radio Bearer configuration).

In the embodiment of the invention, the UE can indicate the state of PDU session to be activated and/or deactivated based on the configuration signaling sent by the network equipment; and indicating the state of the PDU session to the NAS layer through the UE of the AS layer, so that the NAS layer of the UE can determine the state of the PDU session.

An embodiment of the present invention further provides a terminal device, where a schematic structural diagram of the terminal device 300 is shown in fig. 4, and the terminal device includes:

the processing unit 301 is configured to instruct PDU session activation and/or deactivation based on a configuration signaling sent by the network device.

In this embodiment of the present invention, the configuration signaling indicates to deactivate a first PDU session or a first group of PDU sessions, and the processing unit 301 is configured to indicate to deactivate the first PDU session or the first group of PDU sessions at a higher layer.

In this embodiment of the present invention, the processing unit 301 is further configured to release the DRB associated with the first PDU session, or release the DRB associated with the first group of PDU sessions.

In this embodiment of the present invention, the configuration signaling indicates a first DRB ID or a first set of DRB IDs to be released, and when the processing unit 301 releases a DRB corresponding to the first DRB ID or a DRB corresponding to the first set of DRB IDs based on the configuration signaling, and at least one PDU session has no associated DRB,

the processing unit 301 is configured to instruct an upper layer to deactivate the at least one PDU session.

In this embodiment of the present invention, the configuration signaling further indicates that a second PDU session associated with a second DRB corresponding to a second DRB ID is deactivated, and the processing unit 301 is configured to indicate that the second PDU session is deactivated by a higher layer;

the second DRB ID is the same as or different from a first DRB ID, and the first DRB ID belongs to the first group of DRB IDs, or the first DRB ID does not belong to the first group of DRB IDs.

In this embodiment of the present invention, the configuration signaling indicates a second DRB ID or a second group DRB ID added by the UE, and when the processing unit 301 adds a DRB corresponding to the second DRB ID or a DRB corresponding to the second group DRB ID is a first DRB of a third PDU session, the processing unit 301 is configured to indicate that the third PDU session is activated by a higher layer.

It should be noted that the UE according to the embodiment of the present invention is located in the AS layer.

The embodiment of the present invention further provides a terminal device, which includes a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the step of the PDU session status indication method executed by the terminal device when the processor runs the computer program.

Fig. 5 is a schematic diagram of a hardware composition structure of a terminal device according to an embodiment of the present invention, where the terminal device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704. The various components in the terminal device 700 are coupled together by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 5 as the bus system 705.

It will be appreciated that the memory 702 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. The non-volatile Memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), magnetic random access Memory (FRAM), Flash Memory (Flash Memory), magnetic surface Memory, optical Disc, or Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 702 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The memory 702 in the embodiments of the present invention is used for storing various types of data to support the operation of the terminal device 700. Examples of such data include: any computer program for operating on the terminal device 700, such as the application program 7022. Programs that implement methods in accordance with embodiments of the present invention can be included within application program 7022.

The method disclosed in the above embodiments of the present invention may be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The Processor 701 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 701 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 702, and the processor 701 may read the information in the memory 702 and perform the steps of the aforementioned methods in conjunction with its hardware.

In an exemplary embodiment, the terminal Device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, MPUs, or other electronic components for performing the aforementioned methods.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims

A method of protocol data unit session state indication, the method comprising:

the terminal equipment indicates the activation and/or deactivation of the session of the Protocol Data Unit (PDU) based on the configuration signaling sent by the network equipment.
The method of claim 1, wherein the indicating, by the terminal device, activation and/or deactivation of the PDU session based on the configuration signaling sent by the network device comprises:

the configuration signaling indicates to deactivate a first PDU session or a first group of PDU sessions, and a Radio Resource Control (RRC) layer of the terminal equipment indicates to deactivate the first PDU session or the first group of PDU sessions at a higher layer.
The method of claim 2, wherein prior to the RRC layer of the terminal device indicating deactivation of the first PDU session or set of PDU sessions by a higher layer, the method further comprises:

and the terminal equipment releases the Data Radio Bearer (DRB) associated with the first PDU session or the DRB associated with the first group of PDU sessions.
The method of claim 1, wherein the indicating, by the terminal device, activation and/or deactivation of the PDU session based on the configuration signaling sent by the network device comprises:

the configuration signaling indicates a first DRB identification ID or a first group of DRB IDs which are released, the terminal equipment releases the DRBs corresponding to the first DRB IDs or the first group of DRB IDs based on the configuration signaling, and when at least one PDU session does not have the associated DRBs, an RRC layer of the terminal equipment indicates a high layer to deactivate the at least one PDU session.
The method of claim 4, wherein the indicating, by the terminal device, activation and/or deactivation of the PDU session based on the configuration signaling sent by the network device comprises:

the configuration signaling also indicates that a second PDU session associated with a second DRB corresponding to a second DRB ID is deactivated, and an RRC layer of the terminal equipment indicates that the second PDU session is deactivated by a higher layer;

the second DRB ID is the same as or different from a first DRB ID, and the first DRB ID belongs to the first group of DRB IDs, or the first DRB ID does not belong to the first group of DRB IDs.
The method of claim 1, wherein the indicating, by the terminal device, activation and/or deactivation of a protocol data unit session PDU session based on configuration signaling sent by a network device comprises:

the configuration signaling indicates a second DRB ID or a second group DRB ID added by the terminal device, and when the terminal device adds a DRB corresponding to the second DRB ID or the DRB corresponding to the second group DRB ID is a first DRB of a third PDU session, the RRC layer of the terminal device indicates that the third PDU session is activated by a higher layer.
A terminal device, the terminal device comprising:

and the processing unit is configured to indicate the activation and/or deactivation of the session PDU based on the configuration signaling sent by the network equipment.
The terminal device of claim 7, wherein the configuration signaling indicates deactivation of a first PDU session or a first set of PDU sessions, and the processing unit is configured to indicate deactivation of the first PDU session or the first set of PDU sessions in an upper layer.
The terminal device of claim 8, wherein the processing unit is further configured to release a Data Radio Bearer (DRB) associated with the first PDU session or release a DRB associated with the first set of PDU sessions.
The terminal device of claim 7, wherein the configuration signaling indicates a first DRB ID or a first set of DRB IDs released, and the processing unit releases the DRBs corresponding to the first DRB ID or the first set of DRB IDs based on the configuration signaling, resulting in at least one PDU session without an associated DRB,

the processing unit is configured to instruct an upper layer to deactivate the at least one PDU session.
The terminal device according to claim 10, wherein the configuration signaling further indicates deactivation of a second PDU session associated with a second DRB corresponding to a second DRB ID, and the processing unit is configured to indicate deactivation of the second PDU session by an upper layer;

the second DRB ID is the same as or different from a first DRB ID, and the first DRB ID belongs to the first group of DRB IDs, or the first DRB ID does not belong to the first group of DRB IDs.
The terminal device of claim 7, wherein the configuration signaling indicates a second DRB ID or a second group of DRB IDs added by the terminal device, and when the processing unit adds a DRB corresponding to the second DRB ID or a DRB corresponding to the second group of DRB IDs is a first DRB of a third PDU session,

the processing unit is configured to indicate that the third PDU session is active at a higher layer.
A terminal device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor is configured to perform the steps of the method for indicating a session state of a protocol data unit according to any of claims 1 to 6 when running the computer program.
A storage medium storing an executable program which, when executed by a processor, implements the protocol data unit session status indication method of any one of claims 1 to 6.